$\sum_{r=0}^{10} {}^{40-r} C_5$ ની કિંમત શોધો.

  • A
    ${}^{41} C_5 - {}^{30} C_5$
  • B
    ${}^{41} C_6 - {}^{30} C_6$
  • C
    ${}^{41} C_5 + {}^{30} C_5$
  • D
    ${}^{41} C_6$

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Similar Questions

$\mathop \sum \limits_{0 \le i < j \le n} i \binom{n}{j}$ ની કિંમત શોધો.

$^{15}C_3 + ^{15}C_5 + \ldots + ^{15}C_{15} = ?$

જો ${ }^{n} C_0+\frac{1}{2}{ }^{n} C_1+\frac{1}{3}{ }^{n} C_2+\ldots+\frac{1}{n+1}{ }^{n} C_{n}=\frac{1023}{10}$ હોય,તો $n=$

જો $3 \leq r \leq 30$ માટે, $\binom{30}{30-r} + 3\binom{30}{31-r} + 3\binom{30}{32-r} + \binom{30}{33-r} = \binom{m}{r}$ હોય, તો $m$ ની કિંમત શોધો:

જો $\sum_{k=1}^{30} k \left({ }^{30} C _k\right)^2 = \frac{\alpha 60 !}{(30 !)^2}$ હોય,તો $\alpha$ ની કિંમત શોધો.

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